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(No Model.) A 2 Sheets-Sheet 1.

F. SGHMIRK. POSITIVE SHUTTLE MOTION FOR LOOMS.

No. 402,354. Patented Apr. 30.1889.

N. PETERS. mwum m w. Wuhlnglon. n. a

(No'ModeiJ 2 Sheets- Sheet 2.

F. 'SGHMIRK. POSITIVE SHUTTLE MOTION FOR LOOMS.

No". 402.354; I Patented Apr. 30 1889.1

N PETERS. Photo-Lithognphm, Wulllngwn, D-,C

UNITED STATES PATENT OFFICE.

FRANZ SCHMIRK, OF GROSSENHAIN, SAXONY, GERMANY.

- POSITIVE SHUTTLE-MOTION FO R LOOMS.

SPECIFICATION forming part of Letters Patent No. 402,354, dated April30, 1889.

. Application filed May 12, 1888. Serial No. 278,710. (No model.)Patented in Germany November 12, 1886, No.40,573, and May 1,1887, No.42,749; in England June 24, 1887, No. 9,014, and in Austria-HungaryNovember 16, 1887, No. 21,050 and To all whom it may concern:

.Be it known that LFRANZ SOHMIRK, a

subject of the King of Saxony, residing'at.

. May 1, 1887; Great Britain, No. 9,014, June 24, 1887, andAustria-Hungary, Nos. 21,050

- and 52,779, November 1.6, 1887,) whereof the following is aspecification.

My invention relates to positive shuttlemotions for looms, and theimprovements consist in the particular construction of the mechanism foractuating the shuttle and of the shuttle itself. a

On the annexed drawings the said mechanism is represented by Figure 1 inelevation, looking upon the back of the batten. Fig. 2 is a sectionalview on lines 1 1 and 2 2 of Fig.

1; Fig. 3, a sectional plan on line 3 3, Fig. 1;

and Fig. 3*, a vertical section through camdisk F. Fig. 4 is anelevation, and Fig. 5 a plan, of one of the grippers by which theshuttle is held and moved. Fig. 6 is an end view of a gripper andportion of mechanism for opening and closing the same, and Fig. 7 a planof the shuttle. Figs. 8 and 9 are respectively transverse andlongitudinal sections of the, shuttle, the latter being taken on line 44, Fig. 7, and the former at right angles to said line.

In Figs. 1 and 2, A is the batten, to the respective ends of which arefixed the guides a a, on which slide with their base-plates b" thegrippers B B, the said plates 1) having dovetail ledges engaging in likegrooves of the guides. As shown by Fig. 4, each gripper consists of thebase-plate b as lower jaw, and of the lever I), forming the upper jaw,the latter being acted upon by a spring, h, which tends to keep thegripper open. At its operating end the said upper jaw is provided withteeth 2', adapted to engage with like teeth formed upon the shuttle 0,Figs. 7, 8, and 9, which carries the weft-spool O.

For operating the shuttle the two grippers require to be simultaneouslymoved from their outer position toward the center of the batten and backagain, and, besides, at the moment the grippers are at the end of theirinward stroke the one has to close so as to seize the shuttle which hasbeen carried toward it by the opposite gripper, and the latter has toopen in order to release the same, the shuttle being thus alternatelydelivered from one gripper to the other. These motions are brought aboutby the following mechanisms:

The to-and-fro motion of each gripper is produced by a cam-cylinder, N,and the two levers H and a, the lever H being provided with a finger, c,that projects into the camgroove of the cylinder N, and the lever 11,which is pivoted at u, engaging by means of an elongated eye with theend'of the lever H, while at its upper end it is connected by a shortlink, a", to the base-plate of the gripper. The two cylinders N arekeyed on the ends of a shaft, y.

For causing the grippers to open and close alternately at the propermoment and to remain, respectively, open and closed in the interval, thetail ends of the upper jaws, 6, provided each with a projection or pin,f, preferably fitted with a roller, are acted upon by oscillatory barsd, pivoted at m and 'n. to the batten, and the upper edge and axis of0scillation thereof are parallel to the lines of motion of the grippers.These bars have each an arm, (1, (see Figs. 2 and 6,) and they areconnected, by means of the said arms and of rods 1;, tolthe ends of alever, 00, having its fulcrum at w. The consequence of this arrangementis that when the left-hand bar (Z is raised, and is thus caused to actfrom below against the roller on the pin f above it, it will. keep thecorresponding gripper closed during its entire stroke as the said rollerrolls along thebar. The right-hand bar 61 is meanwhile kept depressed onaccount of the connection of the bars with each other by the rods '0 andlever 00, so that the right-hand gripper is then maintained open by itsspring 71.

The lever 00 -is connected at one end by means of a universal joint-suchas a ball and-socket j oint-to a lever, w, pivoted at w,

and engaging with a finger, 10 Fig. 3, in a grooved cam-disk, F, adaptedto cause the bars d to be quickly raised and depressed through themedium of the connecting parts. The disk is keyed on a shaft, g, whichis connected to the shaft y by the spur-wheels E and D, whereof E istwice as large'as D, thus giving the shaft q one-half the speed of shafty, so that each gripper will make full strokes with its jaws alternatelyopen and closed, and the disk is so arranged relatively to thecam-cylinders N that the opening and closing of the grippers will takeplace when they are at the end of their motion toward each other. To theshaft 31 motion is transmitted from the crank-shaft of the loom bysuitable gearing. (Not shown in the drawings.)

In the shuttle shown by Figs. 7, 8, and 9 the teeth designed to beengaged by those of the grippers are formed upon plates It", lodged inrecesses I of the shuttle, and pressed upward against shoulders 25' bysprings the plates 70 being thus adapted to yield and to cause theshuttle to become disengaged from the gripper that holds it' in case anunusual resistance should occur.

In order to increase the containing capacity of the spool, as comparedwith spools of the ordinary kind, and to allow of an easy winding 06 ofthe weft thread or wire, especially if the same is thick or stifi, thespool is arranged with its axis vertically in the shuttle. For thispurpose the portion of the shuttle containing the gripping-surfaces isprovided at the bottom with an arm or carrier, 1), to which is fixed avertical pin, r,-serving as a pintle for the spool to rotate on. Thespool is prevented from accidentally flying oif the pin by means ofaplate, s, hinged to the shuttle and acted upon at its rear end, whichis square, by a spring, 25, in the manner of a clasp-knife. To the plate3 is fixed a spring, 0, bearing upon the spool and serving to check itsrotation if the same should become excessive. The spool is guarded by abow, 7L, having a hole for the weftthread to pass through. Thisarrangement of spool may also be applied to shuttles of otherconstruction and operated by known means.

I claim as my invention 1. In a loom, the combinatiomwith the batten A,of the guides o the grippers B, having each a pivoted jaw, 12, providedwith teeth '5 and projection f, mechanism for positively moving thegrippers toward and away from each other, the bars at, hinged to thebatten and having each an arm, (1, and an edge parallel to the guides(1, adapted to bear against the projections f, and means connected withsaid arms (1 for oscillating the bars (Z and pressing their edgesagainst the projections f, substantially as set forth.

2. In a loom, the combination, with the batten A, of the guides at, thegrippers 13, having each a movable toothed jaw, Z), with projection f,the shaft y, with cam-cylinders N, means of connection between thecylinders N and the grippers, the oscillating bars (Z, shaft q, with camdisk or disks F, means of connection between the disk or disks F andthebars d, and gear-wheels connecting together the shafts y and q,substantially as and for the purpose specified.

3. In a shuttle, the combination, with the body of the shuttle havingrecesses Z, with shoulders Z, of the toothed gripping-plates k, lodgedmovably in the said recesses, and springs 70, pressing the plates isagainst the shoulders Z substantially as and for the purpose set forth.

4. The combination, with the batten A and the shuttle having teeth, ofthe grippers B, each having a pivoted jaw provided with teeth adapted toengage said shuttle, mechanism for moving said grippers toward and fromeach other, a cam operating in unison with said mechanism, the pivotedlever 00, operated by said cam, and bars connected to the respectiveends of said lever 03 and arranged to engage with and oscillate saidpivoted jaws, as set forth.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

FRANZ SCIIMIRK. Witnesses:

LUDWIG FRAMNS, PAUL DRUCKMI'JLLER.

